Which of the following statements is true regarding SQL DELETE operation?
A). It removes all data from a table
B). It updates existing records in a table
C). It adds new records to a table
D). It removes specific records from a table
What is the primary function of the mysqli_fetch_array() function in PHP?
A). Establishing a database connection
B). Executing SQL queries
C). Fetching data from the database
D). Closing the database connection
What is the primary advantage of using prepared statements in PHP for executing SQL queries?
A). Better performance
B). Improved security against SQL injection
C). Easier syntax
D). Compatibility with older PHP versions
What is the primary purpose of the PDO::query() method in PHP PDO extension?
A). Establishing a database connection
B). Executing an SQL query
C). Fetching data from the database
D). Closing the database connection
Which of the following statements is true regarding SQL SELECT operation?
A). It updates existing records in a table
B). It removes specific records from a table
C). It adds new records to a table
D). It retrieves data from a table
What is the primary function of the mysqli_query() function in PHP?
A). Establishing a database connection
B). Executing SQL queries
C). Fetching data from the database
D). Closing the database connection
Which of the following SQL operations is used to remove all data from a database table?
A). INSERT
B). SELECT
C). TRUNCATE
D). DELETE
Which of the following PHP functions is used to execute an SQL query in PDO extension?
A). pdo_execute()
B). pdo_query()
C). pdo_fetch()
D). pdo_prepare()
Which of the following PHP functions is used to get the number of rows affected by an SQL query in MySQLi extension?
A). mysqli_num_rows()
B). mysqli_affected_rows()
C). mysqli_num_fields()
D). mysqli_fetch_row()
Which PHP extension is commonly used for executing SQL queries and interacting with databases?
A). MySQL
B). PDO
C). SQLI
D). PHPDB